diff --git a/src/assets/ublock/mirror-candidates.txt b/src/assets/ublock/mirror-candidates.txt
index 69568a8e0..e76211f31 100644
--- a/src/assets/ublock/mirror-candidates.txt
+++ b/src/assets/ublock/mirror-candidates.txt
@@ -31,3 +31,10 @@ platform.twitter.com
 # Ref: http://www.asp.net/ajax/cdn
 ajax.aspnetcdn.com
     ^ajax\.aspnetcdn\.com\/ajax\/[^?#]+
+
+yastatic.net
+    ^yastatic\.net\/
+    
+yandex.st
+    #same as yastatic, deprecated but still widely used
+    ^yandex\.st\/